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Home >> Hyundai >> 2021 >> Veloster Turbo >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis - 1.6L (3 Of 3) >> DTC P2251-00: O2 Sensor Reference Ground Circuit/Open (Bank 1 Sensor 1) >> DTC Information and Inspection >> DTC Detecting Condition
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DTC Information and Inspection: DTC Detecting Condition

Trouble Shooting Condition Possible cause
Main Action
  • Circuit continuity check
  1. Poor connection
  2. Open or short power/ground in signal circuit
  3. S1
Prerequisite Condition
  • Sensor voltage is between 1.47V and 1.53V
Threshold Value
  • Internal resistance is higher than 950Ω
Diagnosis Time
  • 5 sec
MIL
  • 2 Driving Cycle
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